For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

A new model that incorporates data gathered by the JWST could help scientists understand the composition and mass of objects ...

The Sun’s gravity holds all of these ... much smaller than planets so are also known as 'minor planets'. As well as planets and moons, the solar system also contains dwarf planets, which are ...

The IAU also estimates that there could be "more than 100" extra dwarf planets waiting to be found in the outer solar system, all of which could have moons. "Just like the giant planet satellites ...

We float through space revolving around the Sun along with seven other planets and five dwarf planets—including ... to the outer limits of our solar system, cutting travel time from 30 years ...

Sky gazers across the U.S. will have a chance to see an extraordinary celestial event on Friday as all of the planets in our solar ... which was considered the solar system's ninth planet until it was ...